Title (en)

Coal briquetting process.

Title (de)

Verfahren zur Brikettierung von Kohle.

Title (fr)

Procédé de briquettage de charbon.

Publication

EP 0284252 A1 19880928 (EN)

Application

EP 88302134 A 19880311

Priority

GB 8707223 A 19870326

Abstract (en)

A cold coal briquetting process comprises mixing fine coal with polyvinyl alcohol and a hardening agent selected from iron oxide, phosphate rock and bauxite or combination of two or more thereof. The process permits economies in process and capital costs compared to existing briqueting processes, while still producing satisfactory briquettes.

IPC 1-7

C10L 5/10

IPC 8 full level

C10L 5/14 (2006.01); C10L 5/10 (2006.01)

CPC (source: EP US)

C10L 5/10 (2013.01 - EP US)

Citation (search report)

• [AD] GB 2138442 A 19841024 - AKZO NV
• [A] DE 3335241 A1 19850418 - RUHRKOHLE AG [DE]
• [A] US 1507673 A 19240909 - THEODORE NAGEL
• [AP] EP 0237179 A2 19870916 - COAL INDUSTRY PATENTS LTD [GB]

Designated contracting state (EPC)

BE DE FR

DOCDB simple family (publication)

EP 0284252 A1 19880928; EP 0284252 B1 19900425; DE 3860106 D1 19900531; GB 2203165 A 19881012; GB 2203165 B 19901031; GB 8707223 D0 19870429; GB 8805778 D0 19880413; JP S63256691 A 19881024; US 4787913 A 19881129

DOCDB simple family (application)

EP 88302134 A 19880311; DE 3860106 T 19880311; GB 8707223 A 19870326; GB 8805778 A 19880311; JP 6992288 A 19880325; US 16491388 A 19880307